How to call out the form at main program

[zkdjeksa]

I opened the main program and several forms, but I want to call TForm1 out in the main program.
Do I have to write the procedures? How？

This is how the program looks like now:

program project1;

{$mode objfpc}{$H+}

uses
  {$IFDEF UNIX}{$IFDEF UseCThreads}
  cthreads,
  {$ENDIF}{$ENDIF}
  Classes, unit1, unit2, unit3, SysUtils, FileUtil, Forms, Controls,
  Graphics, Dialogs, StdCtrls, Interfaces;
  { you can add units after this }

begin

  end.

       
How to call the form out?
 

[Handoko]

Have you tried:

Code: Pascal  [Select][+][-]

1.   Form1.Show;

Maybe you want to know this:
https://forum.lazarus.freepascal.org/index.php/topic,38667.msg263400.html#msg263400

[lucamar]

Generally, in GUI applications Form1 (or whatever is your MainForm) is the main program--or can be considered so.

If you're using Lazarus, and unless you have special needs, you should leave the "program" maintenance to Lazarus and call/open other forms from your main form. That's the easiest way to manage a multi-form application.

More specific advice can only be given if you show us (some of) your code and/or describe more thoroughly what you're attempting to do.

For completeness sake, this is how a Lazarus-maintained "main program" may look like:

Code: Pascal  [Select][+][-]

1. program Textpad;
2.  
3. {$mode objfpc}{$H+}
4.  
5. uses
6.   {$IFDEF UNIX}{$IFDEF UseCThreads}
7.   cthreads,
8.   {$ENDIF}{$ENDIF}
9.   Interfaces, // this includes the LCL widgetset
10.   Forms, lazcontrols, fileinfo,
11.   {From here on, my application's forms, units, etc.}
12.   fmain, foptions, feditor, fcheckstr, markup, doctypes,
13.   fdatetime, gstrings, ulogging;
14.  
15. {$R *.res}
16.  
17. begin
18.   Application.Scaled := True;
19.   RequireDerivedFormResource := True;
20.   Application.Initialize;
21.   Application.CreateForm(TMain, Main);
22.   Application.Run;
23. end.

[zkdjeksa]

Thank you so much lucamar, it works.

[zkdjeksa]

Thank you for your reply, Handoko. I have tried the Form1.show. But it didn't work.

And now I have solved the problem.

[lucamar]

Thank you so much lucamar, it works.

The thing to remember is that if you create a new "application" project in Lazarus you should let him manage your program file (which is also the project .. root, let's say)---unless you have special needs, of course. And if you don't know if you have them then you haven't 

Anything else can be done from your main form, or from other forms or units.